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Calculate Minimum Dimensions For Concrete Cantilever Retaining Wall Trial Design Section:

Use this calculation to come up with the minimum dimensions for the trial design section. Then proceed with the design validation calculations.

Calculation:

Designer/Checker:

Input:

Metric Units

(Note: All input Metric units are converted to English units for the equations below and then the output English units are converted back to Metric)

B = 0.4H (Granular Soil/No Surcharge)

B = 0.5H (Granular Soil/Heavy Surcharge)

B = 0.6H (Cohesive Soil/No Surcharge)

B = 0.7H (Cohesive Soil/Heavy Surcharge)

B = HL(3/2) or Toe is 1/3 Heel

Factor of safety against overturning (FS - typically 1.5 for granular soils and 2.0 for cohesive soils)

Height of retaining wall (H - ft or m)

Density of soil (d - pcf or kg/m^3)

Calculated overturning moment per unit length of wall (Ma - lb-ft/ft or N-m/m)

Output:

Resisting moment at heel, MR =

Required length of heel, HL =

Trial Width of Base, (based on backfill soil and wall height or proportioned as toe is 1/3 Heel Length), B =

Assume: Trial Base and Trial Stem Thickness = 12 in.